Co-channel interference cancellation in OFDM networks using coordinated symbol repetition and soft decision MLE CCI canceler

Manar Mohaisen, Kyung Hi Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a new scheme of downlink co-channel interference (CCI) cancellation in OFDM cellular networks is introduced for users at the cell-edge. Coordinated symbol transmission between base stations (BS) is operated where the same symbol is transmitted fromdifferent BS on different sub-carriers. At the mobile station (MS) receiver, we introduce a soft decision maximum likelihood CCI canceler and a modified maximum ratio combining (M-MRC) to obtain an estimate of the transmitted symbols. Weights used in the combining method are derived from the channels coefficients between the cooperated BS and the MS. Simulations show that the proposed scheme works well under frequency-selective channels and frequency non-selective channels. A gain of 9 dB and 6 dB in SIR is obtained under multipath fading and flat-fading channels, respectively.

Original languageEnglish
Title of host publicationICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications
Pages1079-1082
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 - Dubai, United Arab Emirates
Duration: 14 Nov 200727 Nov 2007

Publication series

NameICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications

Conference

Conference2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007
Country/TerritoryUnited Arab Emirates
CityDubai
Period14/11/0727/11/07

Keywords

  • Cellular OFDM networks
  • ML CCI cancellation
  • Soft decision
  • VMIMO

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